<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .parent{
            width: 200px;
            height: 200px;
            /* margin-top: 50px; */
            background-color: aqua;
            /* overflow: hidden; */
            /* border: 1px solid #fff; */
            /* padding: .1px; */
            /* display: flow-root; */
            /* position: fixed; */
            /* position: absolute; */
            float: left;
            /* display: inline-block; */
            margin-left: 10px;
        }
        .child{
            width: 100px;
            height: 100px;
            margin-top: 50px;
            background-color: rebeccapurple;
        }
    </style>
</head>
<body>
    <div class="parent">
        <div class="child"></div>
    </div>
    <div class="parent"></div>
</body>
</html>